Urgent, please walk me through this

Answer:

As Per Given Information

Given mass of H₂O₂ ( Hydrogen Peroxide) 4.0 gm

We've been asked to find the number of moles in Hydrogen Peroxide .

First we calculate molecular mass of Hydrogen Peroxide .

Molecular mass of H₂O₂ = 1×2 + 16 × 2

Molecular mass of H₂O₂ = 2 + 32

Molecular mass of H₂O₂ = 34 gm

Now find the number of moles in given hydrogen peroxide .

[tex] \diamond{\boxed{\blue{\bf{Number \: of \: moles \: = \frac{Given \: mass}{Molecular \: mass} }}}} [/tex]

Put the given value we obtain

[tex] \sf \twoheadrightarrow \: Number \: of \: moles \: = \frac{4}{34} \\ \\ \sf \twoheadrightarrow \: Number \: of \: moles \: =0.117[/tex]

So, the number of moles is 0.117 .

Molar mass of Hydrogen peroxide

No of moles

Answer:

1. C

2.B

Explanation:

yes it's true.

we can smell cause we have nose have smelling sense.

Answer:

Really? I thought we had noses to poke in other people's business

Answer:

25

Explanation:

go answer my question pls

Q = mcΔt

c iron = 0.449 (from table)

m = Q/cΔt

m = 267 /(0.449 x 23.1)

m = 25.74 g

Answer:

Fatty acids, obtained from the breakdown of triglycerides and other lipids, are oxidized through a series of reactions known as β-oxidation. In each round of β-oxidation, 1 molecule of acetyl-CoA, 1 molecule of NADH, and 1 molecule of FADH2 are produced.

Answer:

The concentration of all species, the pH of the solution, and the strongest base is respectively given as)

a

b)pH=3.88

c)ClO-

Question Parameters:

a 0.50 M solution of HOCl at 25℃. pKa = 7.46 at 25â„

Generally, the equation for the Chemical Reaction  is mathematically given as

HOCl=H30+ClO

Therefore

ka=\frac{H3O(ClO)}{HOCl}

Ka=10^{-7.46}

x.x/0.5-x=10^{-7.46}

x=1.317*10^{-4}

In conclusion

a)

the concentration HOCl

C_HOCl=0.5-1.137*10^{-4}

C_HOCl=0.5

the concentration H3O

C_H3O=1.137*10^{-7}

the concentration ClO

ClO=1.137*10^{-4}

b)

pH=-log(1.317*10^{-4})

pH=3.88

c)

The strongest base of the three is the

ClO-

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Answer:

F2: 1

NaBr: 2

NaF: 2

Br: 1

Explanation: Give like :(

The potential energy of the rocket when it reaches its maximum height is 13.5 J.

Potential energy is the energy of a body by virtue of its position in the gravitational field.

To calculate the potential energy it will have at the maximum height, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The potential energy of the rocket when it reaches its maximum height is 13.5 J.

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Answer:

Ionic, atomic, and molecular particles (ions, atoms, and molecules) As a result of strong inter-particle forces, the particles are only able to vibrate rather than move freely. This results in solids having a stable, distinct shape as well as a distinct volume. Solids can only be broken or cut by an outside force.

I hope this helps you

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Temperature is usually defined as a measure of the warmth or coldness of an object or substance. Your answer is, correct do not worry.

Answer: Humans

Explanation: because humans kill great white sharks because scallops, rays and oyster cannot kill them

Answer:

D

Explanation:

The answer is d humans because i already took the test and that's the awnser

Answer:

demonely it was different

Nuclear and Biomass energy are the type of energies that differs from each other in producing carbon dioxide. Thus, option A is accurate.  

Nuclear energy is nonrenewable energy that concerns nuclear reactions to produce electricity. It includes the nuclear fission of the atoms to release energy.

Biomass energy is a renewable source of energy that utilizes and employs living and nonliving biomaterials to generate energy in the form of fuel and electricity. It also produces carbon dioxide as a by-product.

Therefore, option A. the release of carbon dioxide differs nuclear energy from biomass energy.

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Answer:

An increased population in younger women. Studies show that younger women may have more children.

I can't put too much complex information or brainly will delete this.

I hope this answers your question! Thanks, and have a wonderful day.

In an ecosystem with an increase in population of young women there can be an increase in the number of births.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

1.520

1.333

15.899

Explanation:

its very easy

N = n x No

No = avogadro's number = 6.02 x 10²³

n = mol

a. 9.52 x 10²⁶ : 6.02 x 10²³ = 1.58 x 10³ (3 sig figs)

b. 7.81 x 10²² : 6.02 x 10²³ = 1.30 x 10⁻¹ = 0.130 (3 sig figs)

c. 2.5 x 10²³ : 6.02 x 10²³ = 0.42 (2 sig figs)

Answer:

the correct answer is number 7

Answer:

According to the balanced equation TWO moles ammonium nitrate produces FOUR moles of water. It’s a simple proportion. You get twice as many moles of water as you have ammonium nitrate.

Explanation:

Answer:

Answer:1kg box because the smaller the mass, the greater the acceleration

Answer:

mole of CO2 = 6.023*10^23 molecules.

3 moles of CO2 = 3*6.023*10^23 molecules

therefore, 3 moles of CO2 = 18069*10^20 molecules.

Answer:

Plates on Earth's surface shift as a result of strong heat in the Earth's core, which causes molten rock in the mantle layer to move. It flows in a pattern known as a convection cell, which formed as heated material rises, cools, and then sinks. As the cooled material lowers, it heats up and rises again.

Explanation:

Answer:

B

Explanation:

Since hydrogen has only one valence electron, it tends to lose or share with non-metals like chlorine to obtain a stable state.

Answer:

the missing symbol is 2 b e

Explanation:

The net ionic reaction for the precipitation of the product is 2Bi^3+(aq) + 3S^2-(aq) ------>Bi2S3(s)

Precipitation is a reaction between two aqueous species which yields an insoluble product or a precipitate. The precipitate occurs as a solid mass in the reaction vessel.

Now, the reaction occurs as follows;

2Bi^3+(aq) + 3S^2-(aq) ------>Bi2S3(s)

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